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The Paragenesis of the Varuträsk Pegmatite

Published online by Cambridge University Press:  01 May 2009

Percy Quensel
Percy Quensel
Affiliation:
Mineralogica1 Department, University of Stockholm, Drottninggatan 116, Stockholm, Sweden.
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Abstract

A preliminary report is presented on the paragenesis of the Varuträsk pegmatite, situated about 10 km. from Skellefteå, in Sweden. Three main stages can be distinguished (a) An epimagmatic-pegmatitoid stage during which the primary zonal development of the pegmatite body into border zone, wall zone, intermediate zones, and core was accomplished; (b) a hydrothermal replacement stage, divisible into a high temperature phase with a Li-replacement unit and a Cs-replacement unit, and a lower temperature phase with a cleavelandite replacement unit and a feebly developed fluorite unit (c) a final stage of supergene alteration. The age of the pegmatite lies between 1650 and 1800 million years.

Type
Articles
Information
Geological Magazine , Volume 89 , Issue 1 , February 1952 , pp. 49 - 60
Copyright
Copyright © Cambridge University Press 1952

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References

REFERENCES

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